Gapping through TAG derivation trees
Timm Lichte, Laura Kallmeyer · 2010
This work provides a TAG account of gapping in English, based on a novel deletion-like op-eration that is referred to as de-anchoring. De-anchoring applies onto elementary trees, but it is licensed by the derivation tree in two ways. Firstly, de-anchored trees must be linked to the root of the derivation tree by a chain of adjunc-tions, and the sub-graph of de-anchored nodes in a derivation tree must satisfy certain inter-nal constraints. Secondly, de-anchoring must be licensed by the presence of a homomorphic antecedent derivation tree. 1